Optimum Nutrition has launched a ready-to-drink shake that puts two nutrients in one bottle: 30 grams of protein and 8 grams of fiber. The company announced the new 30G Ultra-Filtered Milk Protein Shake + Fiber on September 24, 2026. It is rolling out in the United States through online stores and select retailers.
Quick take: The shake could be a convenient way to add protein and fiber, but you do not need a special drink to get either nutrient. The most useful question is whether its full Nutrition Facts label, price, and taste fit your routine.
What is in the new Optimum Nutrition shake?
According to Optimum Nutrition’s launch announcement, each shake contains 30 grams of protein from ultra-filtered milk and 8 grams of prebiotic fiber. The company lists chocolate, vanilla, and strawberry flavors. It says the drinks contain no artificial flavors, colors, or sweeteners.
Ultra-filtered milk simply means milk has passed through filters that change the balance of its components. The process can concentrate protein while removing some water and other parts of milk. It does not mean the shake is dairy-free: it is a milk-based product.
The company announced a four-pack price of $12.99 online at launch, or about $3.25 per shake. Prices and availability may change, so check the current listing before buying.
What does “prebiotic fiber” mean?
Fiber is a type of carbohydrate your body does not digest in the same way it digests most other carbohydrates. Some types of fiber also serve as food for helpful microbes living in your gut. Those are called prebiotics. You can think of them as food for some of your gut bacteria, rather than bacteria added to the drink.
That distinction matters: prebiotics and probiotics are different. Probiotics are live microorganisms; prebiotics are food components that can encourage certain microorganisms to grow or become more active. The National Institutes of Health explains the difference.
The announcement calls the shake’s 8 grams “prebiotic fiber,” but it does not give enough detail in the release to judge how this particular drink affects an individual’s gut health. A product’s fiber claim is useful information; it is not proof that drinking it will solve a digestive problem.
Is 8 grams of fiber a lot?
It is a meaningful amount for one drink. The FDA’s Daily Value for fiber is 28 grams, so 8 grams is about 29% of that label reference amount. Your own needs can vary, and a shake does not replace fiber from beans, fruit, vegetables, nuts, and whole grains.
If you usually eat little fiber, suddenly adding a large serving may cause gas or bloating. Increase your overall fiber intake gradually and drink enough fluids. The National Library of Medicine gives the same practical advice.
Is 30 grams of protein per shake useful?
It can be, especially when you need a convenient option between meals or after exercise. But whether 30 grams is useful to you depends on how much protein you already eat over the day. One bottle does not automatically make a diet balanced, and more protein is not always better.
Start by estimating your daily needs with our free protein calculator. You can then decide whether a ready-to-drink shake fills a real gap. If you are unsure how many shakes fit into a normal diet, see our guide to how many protein shakes a day.
What should you check before buying?
- The full label: Look beyond the front-of-bottle protein and fiber numbers. Check calories, added sugars, saturated fat, and ingredients.
- Milk ingredients: This shake is made from milk. Check the package if you have a milk allergy or need to limit lactose.
- How it fits your day: A drink can be convenient, but meals can also provide protein and fiber together. Yogurt with berries, or a meal with beans and vegetables, may suit you better.
- Cost per serving: Compare the price and the amount of protein you get with other shakes and foods.
For a broader look at rising whey costs across the industry, read our report on why whey protein is getting more expensive. The new shake is one example of brands adding protein to convenient foods and drinks while also highlighting another nutrient.
The bottom line
Optimum Nutrition’s new shake combines 30 grams of protein with 8 grams of prebiotic fiber in a ready-to-drink format. That is a notable pairing for people who want convenience. Judge it by the complete label and your daily diet, not by the two numbers alone.
